When added to other numbers, the number 1 has just only one fixed form jedna in all cases.
example: dvadesetjednaljudi (N), dvadesetjedna ljudij (G), dvadesetjedna ljudim (D), dvadesetjedna žen (G), ...

Pair (doublet) is par in Neoslavonic, declined as the noun grad (town). Corresponding subjects are in genitive plural.
example: Imam tri pary obuvij. = I have three pairs of shoes.

All kind of containers or similar concepts are expressed in the same way as pairs. Corresponding subjects are in genitive plural.
example: Imaješ jedin buket kvietov. = You have one bouquet of flowers.

One half is polovina declined by the feminine noun pattern žena (woman). Corresponding subjects are in genitive singular.
example: polovina hlieba = one half of bread.

Other fractions (1/3, 1/4, ...) are made from ordinal numbers by adding suffix -ina and are declined by the feminine noun pattern žena (woman). Corresponding subjects are in genitive singular.
example: tretina hlieba = one third of bread.

Decimal numbers have točka (decimal point). This word originaly means any point and is declined by the feminine noun pattern žena (woman), but in decimal numbers it has always the same form točka.
example: 3.14 = tri točka četyrinast.